Wrench.



Patented Apr. 28, 1914.

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UNITED STATES PATENT OFFICE.

JOHN Y. LINTNER AND LOURY L. BENJAMIN, OF BLAIRSVILLE, PENNSYLVANIA.

WRENCH.

To all 'whom t may concern Be it known that we, JOHN Y. LINTivER andLOURY L BENJAMIN, citizens of the United States, residing atBlairsville, in the county of Indiana and St-ate of Pennsylvae nia, haveinvented new and useful Improvements in Wrenches, of which the followingis a specification. A

The present invention relates to improvements in wrenches, and residesinthe construction, combination and operative arrangement of parts setforth in the following specification and falling within the scope of theappended claims.

In the drawing: Figure 1 is a side elevation of a wrench constructed inaccordance with the present invention, Fig. 2 is a similar view withparts in section, Fig. 3 is a transverse sectional view on the line 3 3of Fig. 1, Fig. 4 is a similar section on .the line 4 4 of Fig. 1, and F5 is a perspective view of the locking yoke.

Referring now to the drawings in detail, 1 designates the stationaryhead or jaw which is provided with a shank 2. The shank, upon one of itsfaces, and at a suitable distance from the jaw 1, is channeledlongitudinally its entire length, as indicated by thc numeral 3. Thischannel is closed at the end of the shank, through the medium of a ller4, the said filler being in the nature of a rectangular block and issecured between the walls provided by the channel through the medium ofremovable elements, in the nature of screws 5. The inner edge of thefiller 4 is beveled or inclined, as indicated by the numeral 6, as isalso the inner or connecting wall of the channel, the said wall or endbeing indicated by the numeral \7. The transverse wall formed by thechannel 3, between the walls or ends 6 and 7 is provided with teeth 8.

The numeral 9 designates the movable liaw which is arranged for slidablemovement upon the shank 2, the said jaw having one of its sides or itsside engaging the smooth surface of the wrench opposite the channel 3and its toothed wall 4, enlarged, or provided with a transverseextension 10, whereby this portion of the jaw is afforded a greaterbearing surface upon the shank 2.

The numeral 11 designates the locking element, the side arms of whichhaving, what I will term, their upper ends, provided with a suitableregistering opening 12 for the reception of a pintle 13, wherebySpecification of Letters Patent.

Application led February 4, 1914.

Patented Apr. 28, 1914. Serial No. 816,641.

the yoke is secured to the jaw 9 to the opposite sides thereof, and at apoint opposite the enlargement or extension 10. The side arms of theyoke are spaced to snugly engage with the opposite sides of the shank 2,and the connecting member 14 of the said side arms is provided with anopening 15 adjacent its lower corner, the said opening being' providedto receive one end of a spring 16 which bears against the outer face ofthe shank. The side arms of the yoke, which may be indicated by thenumerals 17, are provided, between their upper ends or ears, formed withthe openings 12 and the connecting member 14, with an integrally formedweb 18, the said web being of a width corresponding with that of thechannel 13, and being adapted to be received within the said channel,and what I will term the inner edge of the said web is formed with teeth20 which are adapted to co-act with the teeth S in the channel of theshank 2. It will thus be noted that the web 18 is connected with thearms 17 of the locking bolt only at the portions thereof adjacent theears provided with the openings 12, a suflicient space being leftbetween the sides 17 and the sides of the web to receive the sidemembers of the shank provided by the channel 3. As stated, the oppositeedges of the sides are beveled, so that the connecting member 14 isdisposed a considerable distance below the ears or corners of the yokeprovided with the openings 12, and when the spring 16 exerts a tensionbetween the connecting member 14 and the shank 2,

the teeth 2O of the web 18 will be forced into engagement with the teeth8 of the shank. The opposite walls of the web 18 are arranged at aninclination similar to the walls 7 and 6, and the said walls 7 and 6 areadapted to serve as abutments for limiting the sliding movement of thelocking yoke in both directions.

From the above description, taken in connection with the accompanyingdrawing, the simplicity of the device as well as the advantages thereofwill, it is thought, be perfectly apparent to those skilled in the artto which such invention appertains without further detailed description.

Having thus described the invention, what we claim is:

1. A wrench including a head and a shank, the said shank beingchanneled, the inner wall of the channel being formed with teeth, amovable jaw upon the shank, a yoke pivotally connected with the movablejaw, said yoke having a web connected therewith, the said web adapted tobe received within the channel of the shank to engage with the teeththereof, and a spring` between the yoke and shank for forcingthe webinto engagement with the teeth of the shank.

2. n a wrench, a head provided with a shank, said shank having achannel, the inner wall of the channel being formed with teeth, the endwalls oie the channel being beveled, a movable jaw upon the shank andhaving one of its sides enlarged, a yoke having inclined side memberspivotally connected with the movable j aw, said yo-ke having anintegrally formed web, the opposite walls of which are inclined, thesaid web being spaced from the side members of the yoke and adapted tobe received within the channel of the shank, the inner wall of the webbeing provided with teeth which are adapted to co-act with teeth in thechannel, the connecting member for the sides of the yoke having anopening, a spring Secured within the opening and arranged within theyoke and adapted to bear against the shank to swing the yoke to bringthe teeth of its web into locking` position with the teeth of thechannel.

In testimony whereof we aiiX our signatures in presence of twowitnesses.

JOHN Y. LINTNER. LOURY L. BENJAMIN.

Wvitnesses Gro. H. MARSHALL, J. C. THOMPSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, I). C.

